User manual

Fig. 50: JK flipflop as slide register

In the quiescent state, both inputs J and K are zero. Push the button J

now. The 1 condition is assumed at Q1 at the next cycle impulse, and

by the following one at Q2 as well. You can clearly see the delay by

one cycle. Release the button. Because both inputs J and K of the first

stage are now 0, the output does not change. Both outputs remain on.

Now push the button K. Q1 is made 0 at the next cycle impulse, and

with a one-cycle delay, so is Q2. Pushing both buttons J and K toggles

the first flipflop. The second one follows the conditions with a delay of

one cycle. All in all, you have gotten an alternating flash.